First, the cold environment of the planting environment
The cold-tolerant rose has strong adaptability, and it has an environment of sunny, leeward and air circulation. The suitable temperature for growth is 8-25°C, the optimum relative humidity for growth is 75-80%, and it can withstand -35°C low temperature in winter. The cold-tolerant roses are suitable for planting greenery or potted plants. They are fertile and loose, have good drainage and ventilation, and are rich in humus-rich loam or light clay.
Second, cultivation technology
1. Site preparation: Planting in nursery or greenery, first leveling up the well-turned land, applying sufficient base fertilizer, and using the farmyard fertilizer as a predominant fertilizer. Add a small amount of diammonium as appropriate. The row spacing for planting roses is generally 40 centimeters and 50 centimeters. In order to facilitate day-to-day management, each plant should be planted with two kinds of behaviors, with a width of 40 cm, and about 3,400 plants per acre.
2, pruning and disinfection of seedlings: Rose is best to dig with the planting, before planting, the seedlings once trimmed, cut off diseased branches, dry branches, weak branches and damage roots and long roots. The pruned roses were soaked with ABT3 rooting powder for 0.5-2 hours and then sprayed with chlorothalonil or carbendazim wettable powder 600 times for 1-2 times.
3. Planting: Put the plants into the hole when planting, lightly raise, carry out the soil, and water, so that the soil is fully wetted, and finally the soil inside the hole is full and practical.
Third, daily management
1. Irrigation: The root soil of the Chinese rose should be kept moist. The number and time of watering should be controlled according to the climatic conditions. The principle of not pouring or pouring should be adhered to. The best time to water is to water in the early morning or near late afternoon.
2. Fertilization: In the case of proper fertilization, the Chinese rose will bloom beautifully and it will also enhance the plant's ability to resist diseases, pests, and cold-resistance. Before the germination of the early spring rose, an inorganic fertilizer should be applied to promote early growth. In cold regions, one and a half months before the autumn frost, spraying with potassium dihydrogen phosphate at a concentration of 1.5-3 ppm for fine foliar spraying can promote rose branching and improve cold resistance. During the growing season, top dressing is performed once a month, so that thin fertilizers are applied more frequently and the fertility is even. Apply 0.15-0.1 kg of compound fertilizer per square meter.
3. Pruning: The growth period of the Chinese rose from spring budding to dormancy in early winter. Before and after each flowering period, pruning should be carried out properly. For newly planted young plants, buds should be picked in time to promote the accumulation of buds. Raise branches and send flowers. Every time after the flowers are cut off, they are cut off. In the pruning of the growing season, in order to prevent the plants from sprouting in the inappropriate position, buds in other parts of the shoots should also be promptly removed. For the robust tree rose, in addition to cutting away dead branches, diseased branches, and injured branches during each pruning process, some thin, weak, messy and overcrowded side branches should be trimmed to make the whole The plants form an inverted umbrella. The winter shears are mainly strong shears, and they are all cut at 3-6 cm from the base, leaving only about 10 buds at the base of the main branch.
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